symbol_as_method_identifier

🔑 Refer to Methods Dynamically with Symbols and send

Symbols are commonly used to reference method names when calling them dynamically. This pattern keeps your code DRY and flexible.

class Greeter
  def hello
    "Hello, world!"
  end
  def goodbye
    "Goodbye, world!"
  end
end

g = Greeter.new
[:hello, :goodbye].each do |method_name|
  puts g.send(method_name)  # Dynamically calls hello and goodbye
end

By passing method names as symbols to send, you can loop through actions or callbacks without hardcoding each method call.